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Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Accounting Manager	Hanna Moos	Germany	1 2 3 4 5
2	Owner	Paul Henriot	USA	1 2 3 4 5
3	Marketing Assistant	Pascale Cartrain	France	1 2 3 4 5
4	Sales Associate	Elizabeth Lincoln	Germany	1 2 3 4 5
5	Owner	Paul Henriot	Spain	1 2 3 4 5
6	Sales Manager	Jaime Yorres	England	1 2 3 4 5
7	Marketing Manager	Paul Henriot	Austria	1 2 3 4 5
8	Sales Manager	Paul Henriot	Germany	1 2 3 4 5
9	Accounting Manager	Howard Snyder	Brazil	1 2 3 4 5
10	Sales Representative	Jaime Yorres	Germany	1 2 3 4 5
11	Sales Agent	Antonio Moreno	Spain	1 2 3 4 5
12	Sales Agent	Pascale Cartrain	France	1 2 3 4 5
13	Accountant	Patricio Simpson	Italy	1 2 3 4 5
14	Marketing Manager	Paul Henriot	Bulgaria	1 2 3 4 5
15	Sales Associate	Pascale Cartrain	Italy	1 2 3 4 5
16	Sales Associate	Patricio Simpson	Germany	1 2 3 4 5
17	Sales Associate	Jaime Yorres	Germany	1 2 3 4 5
18	Sales Associate	Howard Snyder	Bulgaria	1 2 3 4 5
19	Marketing Manager	Matti Karttunen	USA	1 2 3 4 5
20	Owner	Antonio Moreno	Bulgaria	1 2 3 4 5
21	Marketing Manager	Georg Pipps	Austria	1 2 3 4 5
22	Accounting Manager	Pascale Cartrain	England	1 2 3 4 5
23	Marketing Assistant	Pascale Cartrain	Italy	1 2 3 4 5
24	Marketing Assistant	Paul Henriot	Germany	1 2 3 4 5
25	Sales Associate	Howard Snyder	Bulgaria	1 2 3 4 5
26	Accounting Manager	Matti Karttunen	Bulgaria	1 2 3 4 5
27	Sales Agent	Matti Karttunen	Argentina	1 2 3 4 5
28	Accountant	Paul Henriot	Italy	1 2 3 4 5
29	Marketing Assistant	Hanna Moos	Brazil	1 2 3 4 5
30	Marketing Assistant	Georg Pipps	France	1 2 3 4 5
31	Sales Manager	Matti Karttunen	Argentina	1 2 3 4 5
32	Marketing Assistant	Hanna Moos	Germany	1 2 3 4 5
33	Sales Representative	Elizabeth Lincoln	Germany	1 2 3 4 5
34	Sales Consultant	Patricio Simpson	Austria	1 2 3 4 5
35	Sales Consultant	Paul Henriot	Bulgaria	1 2 3 4 5
36	Sales Representative	Antonio Moreno	Bulgaria	1 2 3 4 5
37	Accountant	Jaime Yorres	England	1 2 3 4 5
38	Accountant	Howard Snyder	Germany	1 2 3 4 5
39	Accounting Manager	Hanna Moos	USA	1 2 3 4 5
40	Accounting Manager	Pascale Cartrain	Argentina	1 2 3 4 5
41	Sales Representative	Antonio Moreno	Bulgaria	1 2 3 4 5
42	Sales Manager	Patricio Simpson	Germany	1 2 3 4 5
43	Sales Manager	Antonio Moreno	USA	1 2 3 4 5
44	Owner	Patricio Simpson	Italy	1 2 3 4 5
45	Sales Representative	Antonio Moreno	Argentina	1 2 3 4 5
46	Sales Consultant	Hanna Moos	Italy	1 2 3 4 5
47	Accounting Manager	Georg Pipps	Italy	1 2 3 4 5
48	Sales Representative	Georg Pipps	Brazil	1 2 3 4 5
49	Sales Agent	Elizabeth Lincoln	England	1 2 3 4 5
50	Sales Representative	Elizabeth Lincoln	Italy	1 2 3 4 5
51	Sales Consultant	Antonio Moreno	Bulgaria	1 2 3 4 5
52	Sales Manager	Howard Snyder	Austria	1 2 3 4 5
53	Marketing Assistant	Antonio Moreno	Brazil	1 2 3 4 5
54	Sales Consultant	Matti Karttunen	England	1 2 3 4 5
55	Sales Consultant	Pascale Cartrain	Austria	1 2 3 4 5
56	Accountant	Pascale Cartrain	Germany	1 2 3 4 5
57	Sales Associate	Howard Snyder	Germany	1 2 3 4 5
58	Marketing Manager	Pascale Cartrain	Spain	1 2 3 4 5
59	Marketing Assistant	Georg Pipps	Brazil	1 2 3 4 5
60	Marketing Assistant	Antonio Moreno	Brazil	1 2 3 4 5
61	Owner	Elizabeth Lincoln	Argentina	1 2 3 4 5
62	Marketing Manager	Patricio Simpson	USA	1 2 3 4 5
63	Sales Associate	Paul Henriot	France	1 2 3 4 5
64	Accounting Manager	Howard Snyder	Brazil	1 2 3 4 5
65	Sales Associate	Matti Karttunen	England	1 2 3 4 5
66	Sales Associate	Matti Karttunen	Spain	1 2 3 4 5
67	Sales Agent	Matti Karttunen	Argentina	1 2 3 4 5
68	Owner	Matti Karttunen	Germany	1 2 3 4 5
69	Accountant	Patricio Simpson	England	1 2 3 4 5
70	Accountant	Matti Karttunen	USA	1 2 3 4 5
71	Marketing Manager	Hanna Moos	Germany	1 2 3 4 5
72	Accounting Manager	Jaime Yorres	England	1 2 3 4 5
73	Marketing Assistant	Paul Henriot	Argentina	1 2 3 4 5
74	Marketing Manager	Jaime Yorres	USA	1 2 3 4 5
75	Sales Representative	Elizabeth Lincoln	France	1 2 3 4 5
76	Sales Consultant	Patricio Simpson	Argentina	1 2 3 4 5
77	Marketing Assistant	Georg Pipps	Austria	1 2 3 4 5
78	Marketing Manager	Paul Henriot	Bulgaria	1 2 3 4 5
79	Owner	Jaime Yorres	Bulgaria	1 2 3 4 5
80	Sales Manager	Jaime Yorres	England	1 2 3 4 5
81	Sales Manager	Howard Snyder	England	1 2 3 4 5
82	Marketing Manager	Antonio Moreno	England	1 2 3 4 5
83	Accounting Manager	Antonio Moreno	Austria	1 2 3 4 5
84	Sales Representative	Pascale Cartrain	Argentina	1 2 3 4 5
85	Sales Associate	Paul Henriot	Brazil	1 2 3 4 5
86	Accounting Manager	Elizabeth Lincoln	Bulgaria	1 2 3 4 5
87	Sales Consultant	Pascale Cartrain	France	1 2 3 4 5
88	Sales Consultant	Patricio Simpson	England	1 2 3 4 5
89	Accounting Manager	Paul Henriot	Italy	1 2 3 4 5
90	Sales Agent	Pascale Cartrain	Italy	1 2 3 4 5
91	Sales Consultant	Antonio Moreno	Italy	1 2 3 4 5
92	Sales Representative	Elizabeth Lincoln	Spain	1 2 3 4 5
93	Marketing Manager	Patricio Simpson	Brazil	1 2 3 4 5
94	Accountant	Patricio Simpson	Italy	1 2 3 4 5
95	Sales Consultant	Hanna Moos	Bulgaria	1 2 3 4 5
96	Sales Agent	Georg Pipps	Austria	1 2 3 4 5
97	Sales Agent	Paul Henriot	Spain	1 2 3 4 5
98	Accounting Manager	Georg Pipps	England	1 2 3 4 5
99	Accountant	Howard Snyder	England	1 2 3 4 5
100	Accounting Manager	Paul Henriot	Austria	1 2 3 4 5


...41 42 43 44 45 46 47 48 49 50 ... Item 45001 to 46000 of 300000 Page: of 300 GoPage size:

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Columns
- ID
- Contact Title
- Contact Name
- Country
- Rating

About this demo
C#
VB
Download demo code files
Isolate this demo as a stand-alone application

RadGrid's virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience. The control achieves this thanks to its ItemsPerView property allowing you to control the number of items loaded at a time. Users can now scroll, as well as show, hide, resize and reorder columns without any waiting time.

This demo shows how quickly Telerik's ASP.NET DataGrid can handle user interactions with 300,000 items. You can configure the component to allow scrolling through the entire data set or only through the current page by using EnableCurrentPageScrollOnly property,.

<%@ Page Language="vb" AutoEventWireup="false" CodeFile="DefaultVB.aspx.vb" Inherits="Telerik.GridExamplesVBNET.Performance.Virtualization.DefaultVB" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link href="styles.css" rel="stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1"></telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel" LoadingPanelID="RadAjaxLoadingPanel1" CssClass="demo-container">
        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server"  AutoGenerateColumns="false"
            AllowSorting="true" GroupingEnabled="false"
            EnableHeaderContextMenu="true" AllowPaging="true" PageSize="1000" OnNeedDataSource="RadGrid1_NeedDataSource">
            <MasterTableView TableLayout="Fixed">
                <Columns>
                    <telerik:GridBoundColumn UniqueName="ID" HeaderText="ID" HeaderStyle-Width="50px" DataField="ID"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactTitle" HeaderText="Contact Title" HeaderStyle-Width="150px" DataField="ContactTitle"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactName" HeaderText="Contact Name" HeaderStyle-Width="150" DataField="ContactName"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="Country" HeaderText="Country" HeaderStyle-Width="100px" DataField="Country"></telerik:GridBoundColumn>
                    <telerik:GridRatingColumn UniqueName="Rating" HeaderText="Rating" HeaderStyle-Width="100px" DataField="Rating"></telerik:GridRatingColumn>
                </Columns>
            </MasterTableView>
            <ClientSettings ReorderColumnsOnClient="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder">
                <Virtualization EnableVirtualization="true" InitiallyCachedItemsCount="2000"
                    LoadingPanelID="RadAjaxLoadingPanel1" ItemsPerView="100"/>
                <Scrolling AllowScroll="true" UseStaticHeaders="true" ScrollHeight="500px" />
                <Resizing AllowColumnResize="true" />
            </ClientSettings>
            <PagerStyle Mode="NextPrevNumericAndAdvanced"></PagerStyle>
        </telerik:RadGrid>
    </telerik:RadAjaxPanel>
    </form>
</body>
</html>

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